ST.XAVIER’S COLLEGE : ST.XAVIER’S COLLEGE DEPARTMENT OF EDUCATION ANITA KASHYAP MOTION AND TIME : MOTION AND TIME Motion – The change in the position of a body with time is known as Motion.
Types of motion:-
Oscillatory and Vibratory motion Translatory motion : Translatory motion The motion in which a body moves as a whole and every point on it moves the same distance is called translatory motion.
There are three kinds of translatory motions:-
Random motion Linear motion : Linear motion The movement of a body along a straight line is called linear motion.
For e.g.: A car moving in a straight line. Example of Linear motion : Example of Linear motion Curvilinear motion : Curvilinear motion The movement of a body along a curved path is called curvilinear motion. Curvilinear motion is also known as circular motion.
For e.g.: motion of a car along a curved path. Example of Curvilinear motion : Example of Curvilinear motion Random motion : Random motion The translatory motion of a body which keeps on changing its direction in a disorderly manner is called random motion.
For e.g.: motion of a Football when kicked (for some time). Example of random motion : Example of random motion Rotatory motion : Rotatory motion The motion of a body in which every particle on it moves along a circular motion about a fixed axis is called rotatory motion.
For e.g.: A spinning top. Example of Rotatory motion : Example of Rotatory motion Rolling motion : Rolling motion The motion in which a body undergoes both translatory as well as rotatory motions is known as rolling motion.
For e.g.: A cylindrical object rolling from a slope surface. Example of rolling motion : Example of rolling motion Periodic motion : Periodic motion The motion which repeats itself at a regular interval of time is known as periodic motion.
For e.g.: Motion of the Earth around the Sun. Example of periodic motion : Example of periodic motion Oscillatory And Vibratory motion : Oscillatory And Vibratory motion The to-and-fro motion of a body along the same path is known as oscillatory motion.
For e.g.: Motion of a pendulum.
Small and rapid to-and-fro movement of a body or a part of it from its mean position is called vibratory motion.
For e.g.: Movement of string of a guitar. Example of oscillatory motion : Example of oscillatory motion Example of vibratory motion : Example of vibratory motion